Positioning Beam Variation for Finer AoD Measurement
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Solution Overview
Problem
The accuracy of angle of departure (AoD) measurements in wireless communication systems, particularly in 5G networks, degrades with distance due to increased positional errors, necessitating a tradeoff between latency and accuracy in existing techniques that involve multiple repetitions of positioning signals with varying beam parameters.
Innovation Solution
Transmit positioning resource beams multiple times with different beam characteristics at varying angles and widths to enhance measurement granularity, allowing for improved positioning estimates by receiving entities and transmission/reception points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning signals are transmitted multiple times with varying beam parameters, then measurement accuracy is improved, but latency increases
Solution Approach 1:
The patent segments the beam transmission process into multiple distinct beam characteristics (different beam directions, widths, and shapes) that are transmitted in sequence. By dividing the positioning signal transmission into segmented beam configurations, the system obtains multiple measurement samples without requiring all beams to be transmitted simultaneously, thus managing latency while improving measurement accuracy through multiple data points.
Solution Approach 2:
The patent dynamically adjusts beam parameters (direction, width, shape) for each positioning signal transmission. By making the beam characteristics dynamic rather than static, the system can adapt the transmission strategy to optimize between measurement accuracy and latency. The dynamic variation in beam parameters provides diverse measurement angles without requiring excessive repetition time.
2Measurement precision
If more beam repetitions are used for positioning measurements, then positioning accuracy is improved, but the complexity of the measurement process increases
Solution Approach 1:
The patent changes physical parameters of the beam (direction, width, shape) rather than simply repeating the same measurement multiple times. This parameter transformation approach provides diverse measurement perspectives while keeping the measurement process itself relatively simple. The receiver only needs to measure the signal strength or characteristics for each beam configuration without complex processing, as the complexity is shifted to the transmission side through parameter variation.
Data Source
AI summary
Disclosed are techniques for wireless communication. In an aspect, a receiving entity (RE), e.g., a user equipment or base station, receives a positioning resource beam configuration that defines a set of positioning resources, each positioning resource being transmitted by a transmission/reception point (TRP) at different times using different beams, each of the different beams having a set of beam characteristics that differs from the set of beam characteristics of another of the different beams in at least one beam characteristic. The RE performs positioning measurements on the different beams at the different times, at least based on the sets of beam characteristics, and sends positioning information to the TRP, the positioning information comprising at least some of the positioning measurements, a positioning estimate, or combinations thereof.